3M CP25WB Fire Barrier Caulk, 10.1 Oz Nutdriver Sets Mildew and fungus resistant

Mildew and fungus resistant

Five percent cobalt and heavy duty web construction for higher heat and abrasion resistance

Size: 5" x 24"

Also great when it comes to cleaning grease

3M CP25WB Fire Barrier Caulk, 10.1 Oz Nutdriver Sets Mildew and fungus resistantForms a tight barrier against fire, smoke and toxic fumes. Suitable for a wide variety of through penetration fire stops, including cable, metal pipe, insulated pipe, glass pipe, construction gaps, HVAC ductwork and certain plastic pipe applications. Cures to form a flexible seal, installs with a standard caulking gun, pneumatic pumping equipment or putty knife. ASTM, FM and U. L. tested for 3 hour fire penetration seal for walls and floors.